Which Firestone Air Bags Fit 2026 GMC Sierra 1500 AT4
Published 09/24/2026
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Question:
working on firestone airbags for a 2026 GMC Sierra 1500 AT4 with the 3.0L Duramax Diesel which product will fit F2609 or F2430 have seen a few reviews disputing this. Also do both kits require the F2366 spacer
asked by: Michael O
Expert Reply:
Hi Michael! Unfortunately, neither of those Firestone air bag kits will fit your 2026 GMC Sierra 1500 AT4 with the 3.0L Duramax. Firestone specifically excludes the 3.0L diesel from the # F2609 fitment, and the # F2430 is designed for the older Silverado LD and Sierra Limited body style. The Timbren SES # T28MR you picked up is a good alternative as long as you don't have Adaptive Ride Control.
What are you towing or hauling with your Sierra?
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Product Page this Question was Asked From
Timbren Suspension Enhancement System - Rear Axle
- Vehicle Suspension
- Towing/Load Leveling
- Bump Stops
- Suspension Only
- Heavy Duty
- Rear Axle Suspension Enhancement
- Timbren
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